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  1. Hadoop HDFS
  2. HDFS-11157

Enhance documentation around cpLock

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: documentation, ha, namenode
    • Labels:
      None
    • Target Version/s:

      Description

      The cpLock was introduced in HDFS-7097. Among all operations allowed on SbNN, some acquire this lock (e.g. restoreFailedStorage) and some do not, including metasave, refreshNodes, setSafeMode.

      We should enhance the documentation around cpLock to explain the above. Also, maybe metasave and refreshNodes do not need fsn write lock?

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-7097 Allow block reports to be processed during checkpointing on standby name node

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              • Assignee:
                Unassigned
                Reporter:
                zhz Zhe Zhang
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                Dates

                • Created:
                  Updated: